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Hot Swap (As In Components)
Definition: technique that allows a user to exchange components without having to shut down the entire system. The most common example of hot-swapping is PCMCIA (personal computer memory card interface adapter), or PC Card, components: a user with only one PCMCIA slot can exchange a modem for a network card or hard disk while the machine is running. Special software recognizes the components and allows their immediate use.
Source: Hutchinson Dictionary of Computing and the Internet. Abingdon, Oxfordshire, GBR: Helicon Publishing, 2005. p 269.